JPH11283848A - Stationary induction electric equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the temperature rise which results from the increase in stray losses or local overheating in upper or lower iron-core clamping metallic parts, a tank, etc., by checking the infiltration of leakage magnetic fluxes into the clamping metallic parts, tank, etc. SOLUTION: The reliability of a stationary induction electric equipment is improved by suppressing the increase of stray loss in upper or lower iron-core clamping metallic parts 6, a tank, etc., and at the same time, preventing the temperature rise which results from local overheating by repelling leakage magnetic fluxes from windings 1 and 2 by the use of an eddy current flowing to an electrically short-circuited magnetic shield member 9, even when the leakage magnetic fluxes tend to infiltrate into the tank by arranging the magnetic shield member 9 on the horizontal section of the upper and lower iron-core clamping metallic parts 6 facing the windings 1 and 2, in such a way that the member 9 surrounds a yoke section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stationary induction device, and more particularly to a stationary induction device suitable for a transformer, a reactor, or the like having a magnetic shield device at a core fastening portion thereof.

[0002]

2. Description of the Related Art In recent years, transformers, which are one type of stationary induction electric appliances, have tended to have larger capacities, and the leakage flux from windings has also increased accordingly. Therefore, an increase in stray loss of the transformer structure and an increase in temperature due to an increase in leakage magnetic flux have become problems from the viewpoint of product performance, durability and the like.

[0003] Above all, since the core clamps for clamping the laminated cores are arranged close to the windings, the stray loss and the temperature rise are remarkable. Generally, in order to prevent the above, a part of the iron core fastener is provided with a magnetic shield.

Japanese Patent Laid-Open No. 7-99126 discloses a structure in which a magnetic shield is applied to a part of the iron core fastener to prevent an increase in stray loss and a rise in temperature of the iron core fastener. In this known example, a magnetic shield member is extended in the longitudinal direction of the upper and lower core clamps on the side opposite to the winding of the upper and lower core clamps and on the side opposite to the winding, and both ends are electrically short-circuited. By arranging it, the magnetic flux leakage from the winding is prevented by the above-mentioned magnetic shield member to prevent the magnetic flux from entering the upper and lower iron core fasteners, thereby preventing an increase in stray loss of the iron core fasteners and a rise in temperature. Are listed.

[0005]

However, in the above-described prior art, the magnetic flux leaks from the winding, which is prevented from entering the upper and lower iron core clamps by the magnetic shield member, enters the tank bottom plate and the tank cover. For this reason, there is a problem that the stray loss increases and the temperature rises in this portion.

That is, in the above prior art, the magnetic shield member is extended in the longitudinal direction of the upper and lower iron core clamps on the side opposite to the winding of the upper and lower core clamps and on the side opposite to the winding, and both ends are electrically connected. The magnetic shield member prevents leakage flux from the windings from entering the upper and lower core clamps.However, the magnetic shield member prevents the magnetic flux from entering the upper and lower core clamps. Leakage flux penetrates into the tank bottom plate, tank cover, etc. from the space at the longitudinal end of the upper and lower yoke parts, which are arranged above and below the iron core legs and fastened by the iron core fasteners, causing stray loss. It increases the temperature and induces a temperature rise due to local overheating.

The present invention has been made in view of the above points, and has as its object to reduce stray loss of a tank bottom plate, a tank cover, etc., as well as an iron core fastener, and to reduce local overheating. An object of the present invention is to provide a highly reliable stationary induction device in which the accompanying temperature rise is prevented.

[0008]

According to the present invention, there is provided a laminated iron core comprising a core leg on which a winding is wound and a yoke magnetically connecting both ends of the core leg. A magnetic shield member disposed on the side surface and disposed on a side of the core tightening fitting for tightening the laminated core, which is opposed to the winding, is disposed so as to be electrically short-circuited and surround the yoke portion. In addition to the above-described configuration, the stationary induction device is characterized in that the stationary induction device is provided with a second magnetic shield member so as to electrically short-circuit the inside of the tank side plate to surround the transformer main body.

It is preferable that the magnetic shield member is formed of a material having a lower electric resistivity than the iron core clamp.

Further, in order to achieve the above object, the present invention is arranged on a side surface of a laminated core comprising a core leg on which a winding is wound and an upper and lower yoke portion magnetically connecting both ends of the core leg. A transformer main body provided with an iron core fastener for tightening the laminated core is housed in a tank, and the inside of the tank is divided by a container arranged so as to surround the transformer main body. When the perfluorocarbon liquid contains a gas between the container and the tank, the container is arranged so as to wrap the upper and lower yoke portions, and the side facing the winding is a tank side plate side. An upper and lower support fitting having a horizontal portion extending to the upper and lower support fittings, and an insulating cylindrical container connected to a distal end of the horizontal portion of the upper and lower support fitting and arranged to wrap the winding, and Facing the winding in the horizontal part of The stationary induction device in which the magnetic shield member is arranged so as to surround the upper and lower yoke portions by being electrically short-circuited on the side of the stationary induction device, A stationary induction device provided with a second magnetic shield member so as to surround the transformer body;
Further, in addition to the above configuration, another magnetic shield member is provided on the side of the upper and lower iron core fasteners facing the winding so as to be electrically short-circuited and surround the upper and lower yoke portions. It is characterized by being an electric appliance.

[0011] According to the above-described stationary induction device of the present invention,
A magnetic shield member placed on the side of the upper and lower core fasteners facing the windings, even if the magnetic flux leaking from the windings tries to enter the upper and lower core fasteners, the tank bottom plate, and the tank cover that surround the upper and lower yokes. The reverse magnetic flux generated by the eddy current flowing through the coil repels the leakage magnetic flux from the winding, and furthermore, the magnetic shield member is electrically short-circuited so as to surround the upper and lower yoke portions. Leakage magnetic flux does not enter the tank bottom plate, tank cover, etc. from the space at the longitudinal end of the upper and lower yoke parts fastened by the iron core fasteners, and the upper and lower iron core fasteners, the tank bottom plate, and the tank cover Magnetic flux that penetrates the upper and lower cores, reduces stray loss of the upper and lower iron core clamps, tank bottom plate, tank cover, etc., and prevents a rise in temperature due to local overheating, resulting in highly reliable stationary induction. Appliances can be obtained.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a stationary induction device according to the present invention. Although the present invention can be applied to any stationary induction device, a case of a transformer which is one of the stationary induction devices will be described here.

FIG. 1 shows the main part of the transformer, FIG. 2 shows the overall configuration, and FIG. 3 shows the configuration as viewed from above.

As shown in the figure, an inner winding 1 and an outer winding 2 are wound around a core leg 3, and upper and lower ends of the core leg 3 are connected to the upper and lower ends. A yoke section 4 and a lower yoke section 5 are provided, and an upper yoke section 4 and a lower yoke section 5 are provided.
The upper core tightening bracket 6 and the lower iron core tightening bracket 7 are attached to the side surfaces of the upper and lower cores. These constitute a transformer main body, and this transformer main body is housed together with a cooling medium in a tank 8 composed of a tank bottom plate 8a, a tank side plate 8b, and a tank cover 8c. Upper core clamp 6
And the lower iron core fastening member 7 is formed of a steel material (magnetic and non-magnetic) disposed along the side surfaces of the upper yoke portion 4 and the lower yoke portion 5, and the rising portions 6 b and 7 b for tightening them. And horizontal portions 6a, 6c and 7a, 7c extending perpendicularly from the side surfaces of the upper yoke portion 4 and the lower yoke portion 5 and facing the inner winding 1 and the outer winding 2, respectively. Parts 6b and 7b and horizontal parts 6a, 6c and 7a, 7
c are combined to form a substantially inverted U-shape. Also, the horizontal portions 6a, 7a of the upper core fastening member 6 and the lower core fastening member 7 on the side facing the inner winding 1 and the outer winding 2.
Are provided with magnetic shield members 9 and 10, which are electrically short-circuited and surround the upper yoke portion 4 and the lower yoke portion 5 as shown in FIG. (Only the upper yoke portion 4 is shown in FIG. 1). The material of the magnetic shield members 9 and 10 is, for example, copper or aluminum having a lower electric resistivity than the steel plate used for the upper iron core fastener 6 and the lower iron core fastener 7, or the tank 8 or the like. Is valid.

According to the configuration of this embodiment, FIG.
As shown by arrows in FIG. 3, the leakage flux Φ from the inner winding 1 and the outer winding 2 causes the upper core tightening member 6 and the lower iron core tightening the upper yoke 4 and the lower yoke 5. Magnetic shield members 9 and 10 are electrically short-circuited to the horizontal portions 6a and 7a of the upper and lower iron core fasteners 6 and 7 even if they attempt to invade the upper iron yoke 4 and the lower yoke 4. Since the yoke portion 5 is arranged so as to surround the yoke portion, an eddy current flows in the magnetic shield members 9 and 10 over the entire circumference in a direction for canceling the infiltration magnetic flux, and a reverse magnetic flux (see FIG. (Not shown) repels magnetic flux Φ, and since the upper yoke portion 4 and the lower yoke portion 5 are surrounded by the magnetic shield members 9 and 10,
Since there is no space at the longitudinal ends of the upper yoke portion 4 and the lower yoke portion 5, the leakage magnetic flux Φ is
And 10, the upper core clamp 6 and the lower core clamp 7 and the tank bottom plate 8a,
Since the leakage magnetic flux Φ can be prevented from entering the tank cover 8c, an increase in stray loss and an increase in temperature due to local overheating can be prevented. In addition, since the magnetic shield members 9 and 10 are arranged only on the horizontal portions 6a and 7a of the upper core fastener 6 and the lower core fastener 7, the mounting range of the magnetic shield members 9 and 10 is smaller than before. There is also an effect that can reduce.

FIGS. 4 and 5 show a second embodiment of the present invention. The embodiment shown in the figure is substantially the same as the embodiment described above, but the tank side plate 8 facing the outer winding 2 is not shown.
The configuration in which the magnetic shield member 20 is arranged so as to be electrically short-circuited and surround the transformer main body also on the entire circumference inside b is different from the above-described embodiment.

By adopting such a configuration of the present embodiment, the effect of suppressing leakage magnetic flux Φ from entering into the upper core fastener 6 and the lower core fastener 7 is the same as that of the above-described embodiment. According to the configuration of the present embodiment, as indicated by arrows, the leakage magnetic flux Φ from the inner winding 1 and the outer winding 2 tries to penetrate into the tank side plate 8b, but the magnetic shield member 20 arranged inside the tank side plate 8b does not. A large amount of eddy current flows in such a direction as to cancel the magnetic flux to be penetrated, and the reverse magnetic flux generated by the eddy current repels the leakage magnetic flux Φ, so that the tank bottom plate 8a and the tank side plate 8
(b) Since it is possible to prevent the leakage magnetic flux Φ from entering the tank cover 8c, it is possible to prevent an increase in stray loss and local overheating due to local overheating. Therefore, since there is an effect of preventing leakage magnetic flux Φ from entering, in addition to the effect of the magnetic shield members 9 and 10 arranged on the horizontal portions 6a and 7a of the upper core fastener 6 and the lower core fastener 7, there is more reliability. A high transformer. The mounting range of the magnetic shield member 20 arranged inside the tank side plate 8b is limited to the rising portions 6b of the upper core fastening member 6 and the lower core fastening member 7,
7b is sufficient up to the middle of the tank bottom plate.
a, there is also an effect that the magnetic shield member provided on the tank cover 8c or the like becomes unnecessary.

FIG. 6 shows a third embodiment of the present invention. The embodiment shown in the figure is an improvement of the above-described second embodiment, and the upper core fastening member 6 and the lower core fastening member 7 have a surface facing the inner winding 1 and the outer winding 2. The horizontal portions 6a and 7a are provided with magnetic shield members 9 as in the second embodiment.
And 10, the magnetic shield member 9 is provided.
The horizontal portions 6a and 7a of the upper core fastener 6 and the lower core fastener 7 provided with the upper and lower parts 10 are connected to the tank side plate 8b.
, And longer than the horizontal portions 6c and 7c on the non-winding side to reduce the distance from the magnetic shield member 20 disposed inside the tank side plate 8b.

With the configuration of the present embodiment, the magnetic shield members 9 and 10 provided on the horizontal portions 6a and 7a of the upper core fastener 7 and the lower core fastener 7 are provided.
And the magnetic shield member 20 provided on the tank side plate 8b, the leakage flux Φ from the inner winding 1 and the outer winding 2 is reduced as shown by the arrows, so that the upper iron core clamp 6 In addition, even if an attempt is made to leak to the lower iron core fastening member 7, the tank bottom plate 8a, the tank side plate 8b, and the tank cover 8c, the structure is such that the magnetic flux Φ is surrounded by the magnetic shield members 9, 10, and 20, Upper core clamp 6 and lower core clamp 7, tank bottom plate 8a, tank side plate 8
b, it does not enter the tank cover 8c, and it is possible to more effectively prevent the leakage magnetic flux Φ.

That is, even if the leakage magnetic flux Φ from the inner winding 1 and the outer winding 2 tries to enter the upper iron core fastener 6 and the lower iron core fastener 7, the tank bottom plate 8 a, and the tank cover 8 c, An eddy current flows in the magnetic shield members 9 and 10 provided in the magnetic shield members 6a and 7a in a direction for canceling the penetrating magnetic flux. Can be prevented. Further, even if the leakage magnetic flux Φ from the inner winding 1 and the outer winding 2 tries to enter the tank side plate 8b, the reverse magnetic flux generated by the eddy current generated in the magnetic shield member 20 provided inside the tank side plate 8b. It is possible to repel the leakage magnetic flux Φ to prevent the leakage magnetic flux Φ from entering. Moreover, the magnetic shield members 9 and 1
Since the distance between 0 and 20 is reduced, the effects of both are superimposed, and a more reliable transformer can be obtained.

FIG. 7 shows a fourth embodiment of the present invention. The embodiment shown in the figure is an improvement of the above-described second embodiment, and the upper core fastening member 6 and the lower core fastening member 7 have a surface facing the inner winding 1 and the outer winding 2. The horizontal portions 6a and 7a are provided with magnetic shield members 9 as in the second embodiment.
In this embodiment, the horizontal portions 6a and 7a of the upper core fastening member 6 and the lower core fastening member 7 on the side facing the inner winding 1 and the outer winding 2 are provided. Horizontal portions 11 and 12 are provided on a part of the tank side plate 8b so as to be orthogonal to the tank side plate 8b, and the horizontal portions 11 and 12 of the tank side plate 8b are provided on the side facing the inner winding 1 and the outer winding 2 of the tank side plate 8b. In addition, the magnetic shield member 21 is arranged, and the horizontal portions 6a of the upper core fastener 6 and the lower core fastener 7 are also provided.
The magnetic shield members 9 and 10 provided on the horizontal side 11 and the magnetic shield members 21 provided on the horizontal portions 11 and 12 of the tank side plate 8b have the same height. By adopting such a configuration of the present embodiment, the leakage flux Φ from the inner winding 1 and the outer winding 2 causes the upper core fastener 6 and the lower core fastener 7, the tank bottom plate 8a, and the tank side plate 8
b, Magnetic shield members 9 and 10 provided on the horizontal portions 6a and 7a of the upper iron core fastener 6 and the lower iron core fastener 7 and the tank side plate 8b even if they leak into the tank cover 8c.
An eddy current flows in the magnetic shield members 20 and 21 provided inside the horizontal portions 11 and 12 in a direction to cancel the invading magnetic flux, and a reverse magnetic flux generated by the eddy current repels a leakage magnetic flux Φ. It is possible to prevent the leakage magnetic flux Φ from entering. Moreover, the magnetic shield members 9, 10 provided on the horizontal portions 6a, 7a of the upper core fastener 6 and the lower core fastener 7, and the magnetic shield members provided on the horizontal portions 11, 12 of the tank side plate 8b. 2
Since the mounting position of the magnetic shield member 1 is set at substantially the same height, there is also an advantage that the mounting range of the magnetic shield member 20 provided inside the tank side plate 8b can be reduced.

FIGS. 8 and 9 show a fifth embodiment of the present invention. The embodiment shown in the figure has an upper yoke portion 4 and a lower yoke portion in which an inner winding 1 and an outer winding 2 are wound around a core leg 3 and connected to upper and lower ends of the core leg 3. 5 shows an example in which a non-combustible perfluorocarbon liquid and gas are used as a cooling medium for cooling a transformer body constituted by attaching an upper core fastening member 6 and a lower core fastening member 7 to the side surface of the transformer 5. is there. That is, the inside of the tank 8 is divided by a container 22 arranged so as to surround the transformer main body, and a perfluorocarbon liquid is stored in the container 22 and a gas is stored between the container 22 and the tank 8. Is a transformer.

In this embodiment, the container 22 is arranged so as to surround the upper yoke portion 4 and the lower yoke portion 5, and the side facing the inner winding 1 and the outer winding 2 is on the side of the tank side plate 8b. The upper support fitting 30 and the lower support fitting 35 having horizontal portions 30a and 35a extending to the inner side are connected to the tank side plate 8b side end portions of the horizontal portions 30a and 35a of the upper support fitting 30 and the lower support fitting 35. 1 and a cylindrical insulating cylindrical container 22a arranged so as to enclose the outer winding 2
The insulating cylindrical container 22a is formed of a common plate.
(Not shown) and connected to the upper support fitting 30 and the lower support fitting 35, and the horizontal portions 30a, 30a of the upper support fitting 30 and the lower support fitting 35 facing the inner winding 1 and the outer winding 2 respectively. 35a, the magnetic shield member 23,
24 are arranged so as to be electrically short-circuited and surround the upper yoke portion 4 and the lower yoke portion 5.

With such a configuration of this embodiment, the leakage magnetic flux Φ from the inner winding 1 and the outer winding 2 wraps the upper yoke portion 4 and the lower yoke portion 5 as shown by arrows. Even if an attempt is made to penetrate into the upper support fitting 30 and the lower support fitting 35, the magnetic shielding members 23 and 24 disposed inside the horizontal portions 30a and 35a of the upper support fitting 30 and the lower support fitting 35 cause these magnetic fluxes to enter. The eddy current flows in a direction to cancel the eddy current, and the reverse magnetic flux generated by the eddy current repels the leakage magnetic flux Φ, and the leakage to the upper core fastener 6 and the lower core fastener 7, the tank bottom plate 8 a and the tank cover 8 c. Since the penetration of the magnetic flux Φ is prevented, an increase in stray loss and an increase in temperature due to local overheating can be prevented.

FIG. 10 shows a sixth embodiment of the present invention. The embodiment shown in this figure is the same as the above-described fifth embodiment, except that the horizontal portions 6a, 6a, of the upper core tightening bracket 6 and the lower core tightening bracket 7, which face the inner winding 1 and the outer winding 2, respectively. Magnetic shield members 9 and 10 are arranged inside 7a so as to be electrically short-circuited and surround the upper yoke portion 4 and the lower yoke portion 5.

By adopting such a configuration of the present embodiment, the leakage flux Φ from the inner winding 1 and the outer winding 2 is reduced by the upper and lower core fasteners 6 and 7 as indicated by arrows. Or upper support metal fittings 30 and lower support metal fittings 35, tank bottom plate 8a, tank side plate 8b, and tank cover 8c. The horizontal portions 6a and 7a of the iron core clamp 7, the upper support 30 and the lower support 35
The eddy currents flow in the magnetic shield members 9, 10, 23, and 24 disposed inside the horizontal portions 30a, 35a in the direction of canceling the invading magnetic flux, and the leakage magnetic flux is generated by the reverse magnetic flux generated by the eddy current. Φ is repelled and the leakage flux Φ is prevented from entering the upper and lower core fasteners 6, 7 and the tank 8, thereby preventing an increase in stray loss and an increase in temperature due to local overheating. Becomes possible,
A more reliable transformer can be obtained.

Although the above embodiments have been described with reference to a single-phase center core transformer, similar effects can be expected in the case of a single-phase three-leg transformer and a single-phase five-leg transformer. Although the case where the shape of the transformer tank 8 is square has been described as an example, a similar effect can be expected in pressure vessels such as circular and elliptical tanks.

[0028]

According to the stationary induction electric device of the present invention as described above, the side surface of the laminated core composed of the iron core leg on which the winding is wound and the yoke magnetically connecting both ends of the iron core leg is provided. A static induction member disposed and arranged so that a magnetic shield member disposed on a side facing the winding of a core tightening fitting for tightening the laminated core is electrically short-circuited and surrounds the yoke portion. In addition to the above configuration, in addition to the above-described configuration, the stationary induction device is provided with a second magnetic shield member so as to electrically short-circuit the inside of the tank side plate and surround the transformer main body. Of the magnetic flux leaking from the magnetic shield member arranged on the side of the upper and lower core fasteners facing the winding even if the magnetic flux leaks from the upper and lower iron core fasteners, the tank bottom plate, the tank cover, etc. Winding by reverse magnetic flux generated by current The magnetic shield member is electrically short-circuited and is arranged so as to surround the upper and lower yoke portions. Therefore, the upper and lower yoke tightened by the iron core fastener are provided. The magnetic flux leaking from the space at the longitudinal end of the part does not enter the tank bottom plate, the tank cover, etc., but can prevent the magnetic flux from entering the upper and lower iron core clamps, the tank bottom plate, the tank cover, etc. This has the effect of reducing stray loss of the iron core fastening, the tank bottom plate, the tank cover, etc., and preventing a rise in temperature due to local overheating, thereby obtaining a highly reliable stationary induction device.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing an upper part of a transformer which is one embodiment of a stationary induction device according to the present invention.

FIG. 2 is a longitudinal sectional view of the transformer shown in FIG.

FIG. 3 is a plan view of the transformer shown in FIG.

FIG. 4 is a longitudinal sectional view of a transformer showing a second embodiment of the present invention.

FIG. 5 is a plan view of the transformer shown in FIG.

FIG. 6 is a longitudinal sectional view of a transformer showing a third embodiment of the present invention.

FIG. 7 is a longitudinal sectional view of a transformer showing a fourth embodiment of the present invention.

FIG. 8 is a longitudinal sectional view of a transformer showing a fifth embodiment of the present invention.

FIG. 9 is a plan view of the transformer shown in FIG.

FIG. 10 is a longitudinal sectional view of a transformer showing a sixth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Inner winding, 2 ... Outer winding, 3 ... Iron leg part, 4 ... Upper yoke part, 5 ... Lower yoke part, 6 ... Upper core clamp, 6
a, 6c: horizontal portion of upper core fastener, 6b: rising portion of upper core fastener, 7: lower core fastener, 7a, 7
c: Horizontal portion of lower core fastener, 7b: Rise of lower core fastener, 8: tank, 8a: tank bottom plate, 8b ...
Tank side plate, 8c: tank cover, 9, 10, 20, 2
1, 23, 24: magnetic shield member, 11, 12: horizontal portion of tank side plate, 22: container, 22a: insulating cylindrical container, 30
... Upper support bracket, 30a ... Horizontal portion of upper support bracket, 35
... Lower support bracket, 35a: Horizontal portion of lower support bracket.

 ──────────────────────────────────────────────────の Continued from the front page (72) Inventor Yoshihiro Nagao 1-1-1, Kokubuncho, Hitachi City, Ibaraki Prefecture Inside Hitachi Kokubu Plant

Claims (9)

[Claims] 1. A laminated core comprising a winding, a core leg on which the winding is wound, and a yoke magnetically connecting both ends of the core leg, and disposed on a side surface of the laminated core. Stationary induction including a transformer main body including a core fastening member for fastening the laminated core and a magnetic shield member disposed on a side of the core fastening member facing the winding, in a tank. In the electric appliance, the magnetic induction member is arranged so as to be electrically short-circuited and surround the yoke portion. 2. A laminated core comprising a winding, a core leg around which the winding is wound, and a yoke portion magnetically connecting both ends of the core leg, and disposed on a side surface of the laminated core. Stationary induction including a transformer main body including a core fastening member for fastening the laminated core and a magnetic shield member disposed on a side of the core fastening member facing the winding, in a tank. In the electric appliance, the magnetic shield member is arranged to be electrically short-circuited to surround the yoke portion, and to be electrically short-circuited inside the tank side plate to surround the transformer main body. And a second magnetic shield member. 3. The static induction electric device according to claim 1, wherein the magnetic shield member is formed of a material having a lower electric resistivity than the iron core fastener. 4. The yoke portion is disposed above and below the iron core leg portion, and the upper and lower iron core clamps for tightening the upper and lower yoke portions are located on the side facing the winding and on the side opposite to the winding. The magnetic shield member is formed of a horizontal portion to be formed and a rising portion for tightening the yoke portion, and the magnetic shield member is disposed on a horizontal portion of the upper and lower iron core fasteners facing the winding. 3. The static induction device according to 1 or 2. 5. The stationary induction device according to claim 4, wherein the length of the horizontal portion of the upper and lower iron core fasteners facing the winding is longer than that of the horizontal portion located on the non-winding side. . 6. A horizontal portion of the tank side plate facing a horizontal portion of the upper and lower iron core fasteners, the horizontal portion being opposed to the winding, and a horizontal portion is provided so as to be orthogonal to the tank side plate. The second magnetic shield member is arranged on the winding side of the magnetic shield member, and the magnetic shield member provided on the horizontal portion on the side facing the winding of the upper and lower iron core clamps and the horizontal portion of the tank side plate. 5. The stationary induction device according to claim 4, wherein said second magnetic shield member and said second magnetic shield member are at the same height. 7. A laminated core comprising a winding, an iron leg around which the winding is wound, and an upper and lower yoke magnetically connecting both ends of the iron leg, and disposed on a side surface of the laminated core. And a transformer body having an iron core tightening fitting for fastening the laminated core is housed in a tank, and the inside of the tank is divided by a container arranged so as to surround the transformer body. In a stationary induction device in which a perfluorocarbon liquid contains gas between the container and the tank, the container is disposed so as to wrap the upper and lower yoke portions, and a side facing the winding is a tank. An upper and lower support fitting having a horizontal portion extending to the side plate side, and an insulating cylindrical container connected to the distal end of the horizontal portion of the upper and lower support fitting and arranged to wrap the winding, and Pair with the winding on the horizontal part of the support bracket A stationary induction device, wherein a magnetic shield member is disposed on the opposite side so as to be electrically short-circuited and surround the upper and lower yoke portions. 8. A laminated core comprising a winding, a core leg around which the winding is wound, and an upper and lower yoke portion magnetically connecting both ends of the core leg, and disposed on a side surface of the laminated core. And a transformer body having an iron core tightening fitting for fastening the laminated core is housed in a tank, and the inside of the tank is divided by a container arranged so as to surround the transformer body. In a stationary induction device in which a perfluorocarbon liquid contains gas between the container and the tank, the container is disposed so as to wrap the upper and lower yoke portions, and a side facing the winding is a tank. An upper and lower support fitting having a horizontal portion extending to the side plate side, and an insulating cylindrical container connected to the distal end of the horizontal portion of the upper and lower support fitting and arranged to wrap the winding, and Pair with the winding on the horizontal part of the support bracket On the opposite side, a magnetic shield member is arranged so as to be electrically short-circuited and surround the upper and lower yoke portions, while, on the inside of the tank side plate, electrically short-circuited and surrounds the transformer body. A stationary magnetic induction device, wherein a second magnetic shield member is provided. 9. A laminated core comprising a winding, an iron leg around which the winding is wound, and upper and lower yoke portions magnetically connecting both ends of the iron leg, and disposed on a side surface of the laminated core. A transformer body having upper and lower iron core fasteners for tightening the upper and lower yoke portions of the laminated core is housed in a tank, and the inside of the tank is divided by a container arranged to surround the transformer body. And a perfluorocarbon liquid in the container, a stationary induction device in which gas is stored between the container and the tank, wherein the container is arranged so as to wrap the upper and lower yoke portions, and An upper and lower support fitting having a horizontal portion whose side facing the wire extends toward the tank side plate, and an insulating cylindrical container connected to the distal end of the horizontal portion of the upper and lower support fitting and arranged to wrap the winding. And the horizontal support bracket A magnetic shield member is arranged so as to be electrically short-circuited and surround the upper and lower yoke portions on the side of the portion facing the windings, while facing the windings of the upper and lower iron core clamps. The other side is provided with another magnetic shield member so as to be electrically short-circuited and surround the upper and lower yoke portions, and further, inside the tank side plate, is electrically short-circuited and surrounds the transformer main body. A stationary magnetic induction device characterized in that the second magnetic shield member is provided.